/*
 * Copyright (C) 2013-2015 Matthias Heizmann (heizmann@informatik.uni-freiburg.de)
 * Copyright (C) 2009-2015 University of Freiburg
 *
 * This file is part of the ULTIMATE Automata Library.
 *
 * The ULTIMATE Automata Library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * The ULTIMATE Automata Library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with the ULTIMATE Automata Library. If not, see <http://www.gnu.org/licenses/>.
 *
 * Additional permission under GNU GPL version 3 section 7:
 * If you modify the ULTIMATE Automata Library, or any covered work, by linking
 * or combining it with Eclipse RCP (or a modified version of Eclipse RCP),
 * containing parts covered by the terms of the Eclipse Public License, the
 * licensors of the ULTIMATE Automata Library grant you additional permission
 * to convey the resulting work.
 */
package de.uni_freiburg.informatik.ultimate.automata.petrinet.operations;

import de.uni_freiburg.informatik.ultimate.automata.AutomataLibraryException;
import de.uni_freiburg.informatik.ultimate.automata.AutomataLibraryServices;
import de.uni_freiburg.informatik.ultimate.automata.nestedword.INestedWordAutomaton;
import de.uni_freiburg.informatik.ultimate.automata.nestedword.INwaOutgoingLetterAndTransitionProvider;
import de.uni_freiburg.informatik.ultimate.automata.nestedword.UnaryNwaOperation;
import de.uni_freiburg.informatik.ultimate.automata.petrinet.IPetriNet;
import de.uni_freiburg.informatik.ultimate.automata.petrinet.IPetriNetAndAutomataInclusionStateFactory;
import de.uni_freiburg.informatik.ultimate.automata.petrinet.netdatastructures.BoundedPetriNet;

/**
 * Transforms an {@link INestedWordAutomaton} to a {@link BoundedPetriNet}.
 *
 * @author Matthias Heizmann (heizmann@informatik.uni-freiburg.de)
 * @param <LETTER>
 *            letter type
 * @param <STATE>
 *            state/place type
 */
public final class Automaton2Net<LETTER, STATE>
		extends UnaryNwaOperation<LETTER, STATE, IPetriNetAndAutomataInclusionStateFactory<STATE>> {
	private final INestedWordAutomaton<LETTER, STATE> mOperand;
	private final BoundedPetriNet<LETTER, STATE> mNet;

	/**
	 * Constructor.
	 *
	 * @param services
	 *            Ultimate services
	 * @param operand
	 *            operand
	 * @throws AutomataLibraryException
	 *             if construction fails
	 */
	public Automaton2Net(final AutomataLibraryServices services, final INestedWordAutomaton<LETTER, STATE> operand)
			throws AutomataLibraryException {
		super(services);
		mOperand = operand;

		if (mLogger.isInfoEnabled()) {
			mLogger.info(startMessage());
		}
		mNet = new BoundedPetriNet<>(mServices, mOperand);
		if (mLogger.isInfoEnabled()) {
			mLogger.info(exitMessage());
		}
	}

	@Override
	protected INwaOutgoingLetterAndTransitionProvider<LETTER, STATE> getOperand() {
		return mOperand;
	}

	@Override
	public IPetriNet<LETTER, STATE> getResult() {
		return mNet;
	}

	@Override
	public String exitMessage() {
		return "Finished " + getOperationName() + ". PetriNet " + mNet.sizeInformation();
	}

	@Override
	public boolean checkResult(final IPetriNetAndAutomataInclusionStateFactory<STATE> stateFactory)
			throws AutomataLibraryException {
		if (mLogger.isInfoEnabled()) {
			mLogger.info("Testing correctness of constructor" + mNet.getClass().getSimpleName());
		}
		final boolean correct = new IsEquivalent<>(mServices, stateFactory, mNet, mOperand).getResult();
		if (mLogger.isInfoEnabled()) {
			mLogger.info("Finished testing correctness of constructor " + mNet.getClass().getSimpleName());
		}
		return correct;
	}
}